Challenge Crosswords Science Hard — Set 4
🔬 Science Crossword #1
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Across
- 1. One body blocking another in space
- 4. Force attracting objects to Earth
- 8. A word related to science
- 10. Mixture producing intense heat
- 11. Solid with ordered atomic structure
Down
- 2. A word related to science
- 3. Wearing away of land by water or wind
- 5. A word related to science
- 6. Naturally occurring inorganic solid
- 7. Fourth state of matter
- 9. Positively charged particle
Show answers
- 1 Across: One body blocking another in space (7)ECLIPSE
- 4 Across: Force attracting objects to Earth (7)GRAVITY
- 8 Across: A word related to science (12)EXPERIMENTAL
- 10 Across: Mixture producing intense heat (7)THERMIT
- 11 Across: Solid with ordered atomic structure (7)CRYSTAL
- 2 Down: A word related to science (10)CRETACEOUS
- 3 Down: Wearing away of land by water or wind (7)EROSION
- 5 Down: A word related to science (12)SPECIFICALLY
- 6 Down: Naturally occurring inorganic solid (7)MINERAL
- 7 Down: Fourth state of matter (6)PLASMA
- 9 Down: Positively charged particle (6)PROTON
🔬 Science Crossword #2
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Across
- 1. Pure substance on periodic table
- 5. Naturally occurring inorganic solid
- 6. A word related to science
- 8. Diffusion of water through a membrane
- 9. Force attracting objects to Earth
- 10. A word related to science
Down
- 2. A word related to science
- 3. Positively charged particle
- 4. One body blocking another in space
- 7. Fourth state of matter
Show answers
- 1 Across: Pure substance on periodic table (7)ELEMENT
- 5 Across: Naturally occurring inorganic solid (7)MINERAL
- 6 Across: A word related to science (11)APATOSAURUS
- 8 Across: Diffusion of water through a membrane (7)OSMOSIS
- 9 Across: Force attracting objects to Earth (7)GRAVITY
- 10 Across: A word related to science (12)SPECIFICALLY
- 2 Down: A word related to science (12)EXPERIMENTAL
- 3 Down: Positively charged particle (6)PROTON
- 4 Down: One body blocking another in space (7)ECLIPSE
- 7 Down: Fourth state of matter (6)PLASMA
🔬 Science Crossword #3
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Across
- 4. A word related to science
- 6. Device for controlled nuclear reactions
- 8. Uncharged particle in nucleus
- 9. Substance providing immunity
- 11. A word related to science
- 12. Biological catalyst for reactions
Down
- 1. Center of an atom or cell
- 2. Smallest discrete unit of energy
- 3. Diffusion of water through a membrane
- 5. Mixture producing intense heat
- 7. Large molecule essential for life
- 10. Fourth state of matter
Show answers
- 4 Across: A word related to science (11)APATOSAURUS
- 6 Across: Device for controlled nuclear reactions (7)REACTOR
- 8 Across: Uncharged particle in nucleus (7)NEUTRON
- 9 Across: Substance providing immunity (7)VACCINE
- 11 Across: A word related to science (12)EXPERIMENTAL
- 12 Across: Biological catalyst for reactions (6)ENZYME
- 1 Down: Center of an atom or cell (7)NUCLEUS
- 2 Down: Smallest discrete unit of energy (7)QUANTUM
- 3 Down: Diffusion of water through a membrane (7)OSMOSIS
- 5 Down: Mixture producing intense heat (7)THERMIT
- 7 Down: Large molecule essential for life (7)PROTEIN
- 10 Down: Fourth state of matter (6)PLASMA
🔬 Science Crossword #4
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Across
- 2. Slow-moving river of ice
- 6. A word related to science
- 8. One body blocking another in space
- 9. Group of similar living organisms
- 10. Diffusion of water through a membrane
Down
- 1. A word related to science
- 3. A word related to science
- 4. A word related to science
- 5. Smallest discrete unit of energy
- 7. A word related to science
Show answers
- 2 Across: Slow-moving river of ice (7)GLACIER
- 6 Across: A word related to science (10)CRETACEOUS
- 8 Across: One body blocking another in space (7)ECLIPSE
- 9 Across: Group of similar living organisms (7)SPECIES
- 10 Across: Diffusion of water through a membrane (7)OSMOSIS
- 1 Down: A word related to science (12)REPRODUCTION
- 3 Down: A word related to science (4)ATOM
- 4 Down: A word related to science (9)ECOSYSTEM
- 5 Down: Smallest discrete unit of energy (7)QUANTUM
- 7 Down: A word related to science (11)APATOSAURUS
🔬 Science Crossword #5
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Across
- 4. Naturally occurring inorganic solid
- 5. Group of similar living organisms
- 7. Uncharged particle in nucleus
- 8. Fourth state of matter
- 10. Pure substance on periodic table
- 11. Center of an atom or cell
Down
- 1. Solid with ordered atomic structure
- 2. A word related to science
- 3. Preserved remains of ancient life
- 6. Biological catalyst for reactions
- 8. Large molecule essential for life
- 9. A word related to science
Show answers
- 4 Across: Naturally occurring inorganic solid (7)MINERAL
- 5 Across: Group of similar living organisms (7)SPECIES
- 7 Across: Uncharged particle in nucleus (7)NEUTRON
- 8 Across: Fourth state of matter (6)PLASMA
- 10 Across: Pure substance on periodic table (7)ELEMENT
- 11 Across: Center of an atom or cell (7)NUCLEUS
- 1 Down: Solid with ordered atomic structure (7)CRYSTAL
- 2 Down: A word related to science (12)REPRODUCTION
- 3 Down: Preserved remains of ancient life (6)FOSSIL
- 6 Down: Biological catalyst for reactions (6)ENZYME
- 8 Down: Large molecule essential for life (7)PROTEIN
- 9 Down: A word related to science (4)ATOM
Solver Notes
Ready to test your crossword expertise? Our challenge crossword puzzles feature advanced clues, complex grids, and tricky wordplay designed for experienced solvers seeking a real brain workout.
What are challenge crossword puzzles?
Challenge crossword puzzles are expert-level word games featuring advanced vocabulary, complex clue structures, and larger grids. They are designed for experienced crossword solvers who want to push their skills beyond standard difficulty levels.
How do I improve at solving challenge crosswords?
Build your skills gradually by starting with classic crosswords and working up to challenge level. Learn common crossword abbreviations, practice recognizing wordplay patterns, and expand your vocabulary across history, science, and general knowledge topics.
Are challenge crosswords suitable for all ages?
Challenge crosswords are best suited for adults and advanced students who already have strong crossword-solving experience. The difficult clues and specialized vocabulary assume familiarity with crossword conventions and a broad knowledge base.
How many challenge crossword puzzles are available?
Our challenge collection includes expert-level crossword puzzles covering general knowledge, history, science, and mixed topics. Each puzzle is crafted to provide a satisfying difficulty level that tests even the most seasoned crossword enthusiasts.
What is the difference between challenge and daily crosswords?
Daily crosswords offer moderate difficulty suitable for regular solving sessions, while challenge crosswords feature significantly harder clues and more obscure vocabulary. Challenge puzzles typically take longer to complete and reward deep knowledge across many subjects.